A huge vehicle operated by Kamen Rider W.
By replacing the rear parts of the machine housed in the rotating drum, the bike/machine hard boiler transforms into three modes: land, sea, and air. It is usually located in the basement of the detective agency, but it transforms into a giant vehicle and rushes to W's crisis! When the main body is expanded, it transforms into base form.
Built-in machine hard boiler (motorcycle) replacement gimmick. Replaced with three types of machines: Machine Hard Boiler, Machine Hard Turbuler, and Machine Hard Splasher.